USGS Water-Year Summary 2024
14185000 SOUTH SANTIAM RIVER BELOW CASCADIA, OR
LOCATION - Lat 44°23'31", long 122°29'47" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 sec.31, T.13 S., R.3 E., Linn County, OR, Hydrologic Unit 17090006, on left bank, 0.2 mi upstream from Mouse Creek, 0.8 mi southwest of Cascadia and at mile 49.2.
DRAINAGE AREA - 174 mi².
REVISIONS HISTORY - Revision: Annual maximum gage-height for water year 1990 was revised on June 12, 2023 based on further review of the annual peak gage-height record.
SURFACE-WATER RECORDS
PERIOD OF RECORD - September 1935 to current year. Monthly discharge only September 1935, published in WSP 1318.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 775 ft above NGVD of 1929, from topographic map. Prior to Nov. 1, 1935, nonrecording gage and Nov. 1, 1935 to Sept. 25, 1989, water-stage recorder at site 0.7 mi downstream at datum 759.88 ft above NGVD of 1929.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 31,700 ft³/s Feb. 7, 1996, gage height, 18.11 ft, from rating curve extended above 10,000 ft³/s; minimum discharge, 23 ft³/s Dec. 1, 2, 1936, site then in use.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - WATER TEMPERATURE: October 2008 to current year.
INSTRUMENTATION - Temperature probe and data logger.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 26.1°C July 29, 2009; minimum, 0.0°C Dec. 8, 9, 11, 2009, Dec. 8, 9, 2013.